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tiny algae and animals that float in water and are carried by waves and currents

Which of the following is precise but NOT accurate? (Real measurement: 2.01 cm.)

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One species of Galapagos finches, the cactus finch, eats insects off cactus plants. A disease kills off most of the cacti in the Galapagos Islands. Which of these most likely would happen to the carrying capacity of the island?

Based upon the definition, which of the following is NOT an AUTOTROPH?

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The librarians want to know which students are checking out what types of books. They are testing "Which type of book do 7th graders check out most often: fiction or nonfiction?" The genre of the book is

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A group of elephants gets stuck in mud at the edge of the river from a recent mud slide. A lion waits for an elephant to get tired before it attacks. What is the limiting factor to the elephant population?

Mice produce a large number of offspring all year long, yet the number of mice within a given population changes very little from year to year. The stability of the population size is most likely the result of